Question

The length of a rectangle is 7 m more than its breadth. If its perimeter is 50 m, find the length
and breadth of the rectangle

Answer 1

let us assume that the breadth is x
length is x+7
and the perimeter of rectangle is 50
the perimeter of rectangle is =2(l+b)
so..
2(x+x+7)=50
2(2x+7)=50
4x+14=50
4x=50-14
4x=36
x=36/4
x=9
breadth is 9m
and length is 9+7=16m

Answer 2

let,
l=7+b---------1
perimeter=l+b
50=7+b+b
50=7+2b
7+2b=50
7+b=50/2
7+b=25
b=25-7
b=18m
b=18m sub/ in 1
l=7+18
l=25m